Tab basics
- Double-click empty tab space to create a document;
- Drag a tab out to split it into its own window, drag back to merge;
- Right-click a tab to close all or close others.
Compare side by side
- View → Side by side and pick two documents;
- Enable synchronous scrolling to review changes;
- Use New Window in sheets to view the top and bottom at once.
Switching
Ctrl+Tab cycles tabs; Alt+Tab moves between windows. Pin frequent files in the Recent list.